UPDATE: Aug. 22, 2012, 14:31 : Working. Problem identified to be related to the SE network working with a certain VPN client.
As of 07:38 UTC time, I cannot access the chat site (thus locked out from all rooms) because the login page just stays static and doesn't redirect me.
The only SE sites I can log into are those suffixed with '.stackexchange' except 'chat.tackexchange' . All SE 1.0 (SO/MO/etc..) sites are also unavailable for login.
- Clicking "Login" in the main bar in chat.stackexchange.com gives a-
... Logging you in to the Stack Exchange chat…
Login works best with a reasonably modern browser that supports certain HTML5 features, and you must already have logged in to another network site. If you aren't, you'll have to first log in to your preferred Q&A site, or you can *log in via Stack Exchange. ...
Clicking the link preceded by the asterisk produces:
... Page not found
We couldn't find the page you requested. We did, however, find some guys with an even more serious problem.
Try searching for a particular message
Browse the available rooms ... Blah- blah- blah...
OS: Windows 7 / Browser: Chrome 22-dev / Avast! free antivirus / Anything I missed?